The U.S. Environmental Protection Agency is seeking comment on a proposed permit for a northwestern New Mexico power plant.

The operator of the Four Corners Power Plant near Farmington plans to upgrade two units at the coal-fired plant to reduce nitrogen oxide emissions. The EPA says the installation of what's known as selective catalytic reduction technology will result in an increase in sulfuric acid emissions.

That increase means the power plant is required to get a permit from the EPA that requires the plant operator to minimize the emissions.